armory, part of a 6,000 soldier and airmen contingent, brought in to work with existing law enforcement. >> they have the powers, but they're not carrying weapons, and they'll augment the people out there getting paid to do this. >> while there's lots of new signage. >> reporter: you'll likely see them. >> the national guard will operate over 100 traffic control and crowd management points up 23rd, across k street and massachusetts avenue to north cap 208 street. >> reporter: the first group to put boots on the ground came from pennsylvania, others from puerto rico and wisconsin. most of them have been here before so well familiar with the city and the support that's needed. >> captain nick o'brien has been here before, but was just a kid. during the last inauguration, he was preparing for the transition of power in iraq. it makes him all more aware and proud of the way it's done here. >> the power transition is definitely not peaceful. the security we have here is not nothing like what we had over there. >> after a message from the commander in chief, they'll be off to several d.c. sch